The utility model discloses a stepped ecological
wetland sewage treatment device, which relates to the technical field of
sewage treatment and comprises an ecological
wetland pool, and a treatment mechanism for treating
sewage is arranged in the ecological
wetland pool. Through the treatment mechanism, the impermeable layer, the substrate layer and the wetland plants form the wetland ecological
pool, the first water pump is started, sewage in the filtering pool is discharged into the highest ecological wetland pool through the water outlet
pipe, and the sewage can be purified through the plants, microorganisms and soil in the ecological wetland pool; dynamic flowing of the sewage is achieved through the
step height difference of the ecological wetland pool, so that the sewage can be better purified, the
water quality improvement and landscape requirements are met, meanwhile, the longitudinal multi-
habitat structure of natural
ecology is fused, and compared with an existing sewage purification treatment technology, the ecological wetland pool has the advantages of being simple in structure and convenient to use. The
sewage treatment system based on the
cascade type ecological wetland is optimally designed, and has the characteristics of small occupied area, good economic performance, strong landscape
plasticity and the like.